800956981444 has 9 divisors (see below), whose sum is σ = 1401677849901. Its totient is φ = 400477595760.

The previous prime is 800956981427. The next prime is 800956981523. The reversal of 800956981444 is 444189659008.

The square root of 800956981444 is 894962.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 718151163844 + 82805817600 = 847438^2 + 287760^2 .

It is a super-2 number, since 2×800956981444² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1566184 + ... + 2013664.

Almost surely, 2^800956981444 is an apocalyptic number.

800956981444 is the 894962-nd square number.

It is an amenable number.

800956981444 is a deficient number, since it is larger than the sum of its proper divisors (600720868457).

800956981444 is an frugal number, since it uses more digits than its factorization.

800956981444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894966 (or 447483 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 58.

The spelling of 800956981444 in words is "eight hundred billion, nine hundred fifty-six million, nine hundred eighty-one thousand, four hundred forty-four".